To access the Freeside servers for services such as SSH you will need to connect to the univesities VPN intstuctions to do this are avaliable on the ICT sharepoint. https://share.hull.ac.uk/Services/ICT/SitePages/VPN%20-%20Working%20Remotely.aspx

For apt-based systems:

sudo apt install openconnect
sudo openconnect --protocol gp pa-vpn.hull.ac.uk